TAILIEUCHUNG - Changes in anatomical and physiological parameters of soybean under drought stress
Anatomical changes in the root, stem, and leaf of soybean (Glycine max (L.) Merr. cv. Nazlıcan) plants under drought stress were studied by light microscope and their significance was evaluated by numerical analysis. Some anatomical features related to parenchymatous cells, diameter of tracheas belonging to the root, stem, and leaf; stomata index; and size and average number of stomata and epidermal cells were found to be important characters varying in soybean plants under stress. | S. MAKBUL, N. SARUHAN GÜLER, N. DURMUŞ, S. GÜVEN Research Article Turk J Bot 35 (2011) 369-377 © TÜBİTAK doi: Changes in anatomical and physiological parameters of soybean under drought stress Serdar MAKBUL, Neslihan SARUHAN GÜLER*, Nuran DURMUŞ, Seher GÜVEN Faculty of Science and Arts, Department of Biology, Rize University, Rize - TURKEY Received: Accepted: Abstract: Anatomical changes in the root, stem, and leaf of soybean (Glycine max (L.) Merr. cv. Nazlıcan) plants under drought stress were studied by light microscope and their significance was evaluated by numerical analysis. Some anatomical features related to parenchymatous cells, diameter of tracheas belonging to the root, stem, and leaf; stomata index; and size and average number of stomata and epidermal cells were found to be important characters varying in soybean plants under stress. These characters were also statistically significant. Leaf water potential (Ψleaf ), root:shoot ratio, total chlorophyll content, and stomatal conductance were measured. Ψleaf, total chlorophyll content, and stomatal conductance were lower while root:shoot ratio was higher in stressed plants compared to the unstressed ones. It has been concluded that some anatomical and physiological changes occurred in soybean under drought stress. Key words: Drought stress, Glycine max, anatomical structure, chlorophyll content, water potential Kuraklık stresi altındaki soya fasülyesinin anatomik ve fizyolojik parametrelerindeki değişimler Özet: Bu çalışmada, kuraklık stresi altındaki soya fasülyesi (Glycine max (L.) Merr. cv. Nazlıcan) bitkilerinin kök, gövde ve yaprağındaki anatomik değişiklikler ışık mikroskobuyla çalışıldı ve önemlilik dereceleri nümerikal analizle değerlendirildi. Parankima hücreleriyle ilgili bazı anatomik özelliklerin, kök, gövde ve yapraktaki trake çaplarının, stoma indeksinin, stoma ve epidermis hücrelerinin büyüklüğü ve ortalama sayılarının stres altındaki soya .
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